Car-truck.



No. WSV/39.

PATENTE EEO. 27, 1904.

H. C.' BUHUP.

GAR TRUCK.

APPLICATION FILED AUG. 25, 190%.

3 SHEETS-SHEET 1,

PATENTBD DB0. 27, 1904.

H. G. BUHOUP.

GAR TRUCK. APPLICATION FILED AUG. 25, 1904.

PATENTED DEC. 27, 1904.

H. G. BUHOUP.

GAB TRUCK. APPLICATION FILED AUG. 25. 1904.

W/TNESSES;

Patented December 27, 1904.

UNTTBU STaTns PATENT Trice.

HARRY C. BUI-IOUP, OF CHICAGO, ILLINOIS.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 778,739, dated December27, 1904.

Application filed August 25, 1904. Serial No, 222,080.

To m7/ 'W7/fmt it 77u07/ concern.' 1

Be it known that I, HARRY C. BUHoUr. a citil Zen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Car-Trucks; and I herebydeclare the following to be a full, clear, and exact description of thesame, reference being' had to the accompanying' drawings, in which-Figure lis a view, partly in side elevation and partly in section on theline 1 l, Fig. 2, of a car-truck embodying' my invention. Fig. 2 is aview of one-half of the truck, a portion thereof being' shown in planand a portion in section on the line E2 2, Fig'. l. Fig'. 3 is atransverse vertical section on the line 3 3, Fig. 2. Fig'. I is a sideelevation of one of the side frames. Fig'. 5 is a View of one of theside frames, a portion thereof being shown in plan and a portion insection on the line 5 Fig'. a. Fig'. 6 is a view of one-half thetruck-transom, a portion thereof` being' shown in plan and a portion insection on the line 6 6, Fig. 7. Fig'. 7 is an end elevation of thetruck-transom. Fig. 8 is a longitudinal vertical central section ofone-half of the trucktransom. Fig'. 9 is a side elevation of onehalf ofthe truck-transom. Fig. 10 is a plan view of the spring-cap. Fig. l1 isa sectional view of the spring-cap, taken on the line ll Il, Fig. IO.Figs. 1Q, 13, and let are views at right angles to each other, showingone of the transom main caps. Figs. 15, I6, and 1T are views at rightangles to each other, showing one of the transom wing-caps.

Like symbols refer to like parts wherever they occur.

My invention relates to the construction of trucks for railway-cars orother vehicles, and has for its object to produce a truck of greatflexibility which will accommodate itself to inequalities in the trackor road-bed, thus relieving the component truck members from sudden andundue strains, and thereby increasing the life of the truck.

Generally stated, the main feature of my invention resides in acombination wherein thel side frames and the transom of a cartruck areso mutually arranged that they may have a relative rectilinear movementand also a relative turning', rotary, or curvilinear movement withrespect to each other.

There are other minor features of invention, all as will hereinaftermore fully appear.

I will now proceed to describe my invention more fully, so that othersskilled in the art to which it appertains may apply the same.

Since both sides of the truck are alike, I have illustrated and shalldescribe but onehalf 0f the structure.

In the drawings chosen to illustrate my invention, the scope whereof ispointed out in the claims, A is the side frame of a truck which issupported at its extremities by journal-boxes (not shown) in awell-known manner, said journal-boxes being secured to the side frame bydetachable stirrups B B, having lugs lb lb, which pass throughcorresponding openings of the side frame, said stirrups B B beingretained in position by keys which pass through slots or perforations inthe lugs I l" thereof; but, if desired, the journal-boxes may beattached to the side framein any other manner. Preferably I form theside frame with a central opening' C and openings D D, symmetricallydisposed with relation thereto; but the number and arrangement of suchopenings or equivalent sockets for the reception of the ends of thetransom may be varied or the trunnions on the transom may be formed uponthe side frames, the transom being' provided with apertures or socketsto receive the same. At the base of the central opening C the lower railof the side frame is broadened out to form a spring-seat l, and springseats or pockets ll ld are formed in the side frame at its junction withthe base of the openings D D; but such spring-seat and springpockets mayobviously be made independent of the side frame.

Extending upwardly from the spring-seat if and at the sides of thecentral opening C are the spring-cap guides 2C4 2, which are adapted toeng'age the corresponding guidenotches 2e of the spring-cap E, saidspring'- cap guides 2 2 being preferably terminated short of the top ofthe central opening C in order to facilitate the introduction of thetransom and transom main cap.

Seated upon the spring-seat lC and within IOO each of the spring-pocketsl 1 are coiled springs F or other resilient elements for yieldinglysupporting the transom, the spring or group of springs of the centralopening' C supporting the spring-cap E and the resilient members F ofthe openings D D preferably directly supporting the transom-wings, aswill presently appear. The spring-cap E, which rests upon the centralgroup of springs, is preferably formed with guide-notches or guideways2C 2, that are adapted to engage the guide-ribs QCQC, bordering thesides of the central opening C, said spring-cap E having in its uppersurface a depression le, preferably in the form of a segment of asphere, such depression being designed to receive a correspondingprojection upon the under side of the transom; but, if desired. thelocation of these convex and concave portions may be interchanged.

The yieldingly-supported transom G, which is the means of connecting theside frames A A, is at each of its ends preferably provided with acentral trunnion H and a plurality of transom wings K K; but, ifdesired, the number of such members may be increased or decreased. Thetrunnion H is preferably provided with a plurality of curved segmentalfaces lh l, which engage and are adapted to rotate within the trunnionmain cap M, the extent of such rotation of the trunnion within the maincap being limited by the engagement of the upper inclined faces 2h 2 ofthe trunnion with the interior of the main cap M when the desired extentof rotation is reached, said main cap M acting in this respect as astop. By forming the trunnion H with the curved segmental faces a strongyet compact structure is obtained.

Upon the under side of the main trunnion H is formed a projection 3h,preferably a segment of a ball or sphere, such projection 3h engagingthe corresponding depression or socket le of the if'ertically-movablespringcap E, and thereby constituting a verticallymovable iiexible jointor connection between the transverse connecting` member or transom G andthe side frames A A.

The transom-wings K K are preferably upon formed withspring-seats1klk,which bear u pon their respective springs FF, saidspringseats lk l being slightly curved or inclined upwardly at pointsfarthest removed from the longitudinal axis of the transom in order torelieve such springs of the transverse bending effect upon them when thetransom 1'0- tates, this rotation being permitted by the clearanceallowed between the side trunnions and the borders of the openings D Dof the side frame, said transom-wings being also undercut or curved, asat 2 2, for this purpose.

For the purpose of retaining the side frames A A in planes substantiallynormal to the truck-transom G, l prefer to secure the transom main cap Mand the transom wing-caps N N to the main trunnion H and thetransom-wings K K, respectively. by bolts, as shown, or in othersuitable manner; but, if desired, the end caps may be omitted and therelation of the transom and side frames be maintained by other suitablemeans--as, for example, by keys or bolts which pass through such membersand bear upon the side frame.

rl`he transom main cap M is constructed with an open or perforatedbottom to permit the projection 8h of the transom to engage thedepression le of the spring-cap E, and the interior of said cap M isprovided with curved segmental faces, as at l l1", to correspond withthe curvature of the faces lh lh of the trunnion H.

The lugs, ears, or other portions 2 2' and 2 2" of the transom main capM and transom wing caps N N, respectively, which bear upon the sideframe, may, if desired, have a slight convexity of curvature, thusminimin` ing the wear between such caps and side frames when the truckis in service.

The transom main cap and the transom wingcaps are secured to the centertrunnion and to the transom-wings, respectively, by bolts, as shown, orin other suitable manner, and in. order to provide for any lateralmovement of the transom main cap l prefer to slightly elon gate thebolt-hole in the face thereof.

If desired, the spring-cap E may be omitted and the transom main cap Mmay perform the function thereof by causing the latter to be directlysupported by the springs and to move in vertical guides on the sideframe.

The construction of the several members of the truck being substantiallysuch as hereinbefore pointed out, the structure may be assembled byseating the springs F upon the spring-seat 1C and within thespring-pockets l l"1 of the openings (land D D of the side frames A A,then inserting the spring-cap Ein the central opening A and causing thenotches or guideways 2 2 thereof' to engage the guideribs 2 2, whichborder the sides of said opening' or aperture (l, the said spring-caplil resting upon the springs F of the central opening. The main trunnionH and the transomwings K li of the transom Gr are then introduced in theproper apertures of the side frames and the transom is lowered until theprojection 31 on the under side of the central trunnion H seats itselfin the depression l" of the spring-cap E. 'The transom main cap M andthe transom wing-caps N N are then applied and secured to the transomsaid main cap M operating as .a filler-niece t0 prevent upward movementof the transom independent of the springs; but, if desired, such capsmay be omitted and the main trunnion H may be made the full width of thecentral aperture of the side frame, or a plate or other means may beadopted as a filler between the top of the central transom-trunnion andthe side IOC IOS

IlO

IIS

frame. Finally, the journal-boxes, Wheels, and axles are secured to theside frames by means of the detachable journal-box guides or stirrups BB.

In the operation of the truck in service it will be observed that uponstrikinga high or low lioint or other inequality in the track the sideframe rotates slightly' on the transom, compressing the springs orresilient element under one ofl the transom-Wings K, which, with itswing-cap N, rotates relatively to the side frame, such compressionoperating as a positive means of' returning' the side frame to itsnormal position relative to the transom after the obstruction orinequalityT is passed, as well as constituting a means for cushioningthe turning movement of' the side frame by the interposed yieldingresistance. The component members ofl the truck are thus relieved fromthe abnormal strains usually transmitted. from one to the other inpassing' over inequalities in the track and the life of the truckstructure is greatly prolonged. The transom is also adapted to have avertical rectilinear reciprocation with respect to the side frames byreason of' its bearing on the spring-supported spring-caps E E, whichmove vertically in guides on` the side frames, as before pointed out.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. A car-truck having side frames and a transverse connecting memberadapted to have a relative rectilinear and a relative turning movementWith respect to each other.

2. In a car-truck, the combination With side frames, of' ayieldingly-supported transom relatively rotatable With respect thereto,substantially as and for the purposes specified.

3. In a car-truck, the combination of side frames and a transom, saidparts being relatively rotatable and vertically movable, substantiall yas and for the purposes specified.

l. ln a car-truck, the combination of' side frames and ayieldingly-supported transom, said parts being relatively rotatable andvertically movable, substantially as and for the purposes specified.

5. In a car-truck, thc combination ofl side frames and ayieldngly-supported transom, said parts being relatively rotatable,substantially as and for the purposes specified.

6. In a car-truck, the combination With-side frames each provided with aplurality of spring-seats, of' a plurality of' springs seated on saidseats, and a transom having' at each end a main trunnion and a pluralityofl transom-Wings supported by said springs, substantially as and forthe purposes specified.

T. In a car-truck, the combination With side frames, of ayieldingly-supported transom provided with a plurality of trunnions,substantially as and for the purposes specified.

S. In a car-truck, the combination with side frames, of ayieldingly-supported transom relatively rotatable with respect thereto,and means for limiting the extent of' such rotation, substantially asand for the purposes specified.

9. In a car-truck, the combination With side frames, of a transomrelatively rotatable with respect thereto, and means for cushioning suchrelative rotation of' said side frames and transom, substantially as andfor the purposes specified.

IO. In a car-truck, the combination with side frames each provided witha plurality of spring-seats, of a plurality of springs seated on saidseats, and a rotatable transom having at each of its ends a pluralityofl transom- Wings supported by said springs, substantially as and forthe purposes specified.

Il. In a car-truck, the combination of side frames and ayieldingly-supported transom, said members having' atrunnion-and-soclzet engagement, substantially as and for the purposesspecified.

l2. In a car-truck, the combination With side frames, of' springs seatedon said side frames, spring-caps supported by said springs, and atransom carried by said spring-caps, said side frames and said transombeing relatively rotatable, substantially as and for the purposesspecified.

13. In a car-truck, the combination with side frames, of springs seatedthereon, verticallymovable spring caps supported by said springs, and atransom relatively rotatable with respect to said side frames, saidspringcaps and said transom having ball-and-soclzet connections betweenthem, substantially as and for the purposes specified.

14. In a car-triicl,tlie combination with side frames, of` a transomhaving a curved segmental trunnion at each of' its ends,said side framesand said transom being rotatable relatively, substantially as and f'orthe purposes specified.

I5. In a car-t1'ucl ,the combination with side frames, of a transomhaving at each ofl its ends a curved segmental main trunnion andyieldingly-supported transom-Wings,and means for yieldingly supportingsaid transom- Wings, substantially as and for the purposes specified.

16. In a cartruck,the combination with side frames, of springs seatedthereon, spring-caps bearing upon said springs, a transom supported bysaid spring-caps and relatively rotatable with respect to said sideframes, and means for limiting' the extent of such rotation,substantially as and f'or the purposes specified.

17. In a ca1-trucl ,tlie combination with side frames, of springs seatedthereon, verticallymovable spring caps bearing upon said springs, atransom supported by said springcaps, and transom-caps secured to theends of said transom, substantially as and for the purposes specified.

18. In a car-trucl,tlie combination With side frames, of springs seatedthereon, a transom IOO sil:

having a trunnion at each of its ends, and means l interposed betweensaid springs and said transom adapted to permit a rotation and avertical movement of the latter relatively to said side frames,substantially as and for the purposes specified.

i9. ln a car-truek,the combination with side frames, of springs seatedthereon, a transom havingsegmental trunnions supported by said springs,and transom-caps having' curved segmental faces on the interior,substantially as and for the purposes specified.

20. ln a carstruclgthe combination with side frames, of springs seatedthereon, verticallymovable spring caps bearing upon said springs, atransom having segmental trunnions supported by said springs and havingball-andsocliet connections with said spring-caps, and transom-capshaving curved segmental faces on the interior, substantially as and forthe purposes specified.

2l. ln a car-truck, the combination with side frames, of springs seatedthereon, and a transom provided at each of its ends With a plurality ofmembers having curved segmental faces, said transom yieldingly supportedby said springs, substantially as and :for the purposes specified.

22. ln a ea1trucl,the com bination with side frames, of springs seatedthereon, a transom having at each of its ends a main trnnnion andtransom-Wings, spring-caps havii'ig ball-andsocket connections with saidmain trunnion, and transom-caps for said main and transom wings,substantially as and for the purposes specified.

In testimony whereof I afx my signature, in presence of two Witnesses,this 23d day of August, 1904.

HARRY C. BUHOUP.

Titnessesc ALBERT J. BUCKLEY, E. C. BATES.

